Well there’s a first time for everything!
I would say, make sure your spiritual hygiene is on point, and how to check the summoned is who you wanted.
It’s not much good calling, getting an impostor or parasite and not knowing, and they can lead you up the garden path, at best wasting your time and at worst draining you to the point of making you sick, or tell you rubbish that slows down your journey, and before you know it you’re on online forums telling everyone you’re Lucifer incarnate and married to Hekate, while still not getting what you want in life.
Although, whatever happens you’ll still learn something eventually. We have some tutorials and discussions on getting is shape for a successful evocation: